@article{MZM_1978_23_1_a5,
     author = {A. I. Vasil'ev},
     title = {Approximative compactness of the algebraic sum of sets},
     journal = {Matemati\v{c}eskie zametki},
     pages = {55--60},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1978_23_1_a5/}
}